When it is spring in the US, which hemisphere is tilted towards the sun?

The organism Feline domesticus is a member of the genus:

Ostrovityanka [42]

Felis domesticus & Felis silvestris. They both belong to the same genus (cats).

8 0

3 years ago

Scientists discovered that the inner core of Earth is a solid. Explain what evidence supports this thinking. Be sure to include

Leya [2.2K]

Answer:

The inner core is solid because the inner core consists of a lot of pressure and high temperatures. And the more pressure and high temperatures the more dense the substance gets.

Explanation:

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5 0

3 years ago

Which of these elements is likely to be found in an organic compound?

Anettt [7]

Answer:

it could be B or A

Explanation:

hope it helps

5 0

3 years ago

Memory cells may take the form of B cells. T cytotoxic cells. T helper cells. All of the choices are correct.

topjm [15]

Answer:

Having considered how an appropriate primary immune response is mounted to pathogens in both the peripheral lymphoid system and the mucosa-associated lymphoid tissues, we now turn to immunological memory, which is a feature of both compartments. Perhaps the most important consequence of an adaptive immune response is the establishment of a state of immunological memory. Immunological memory is the ability of the immune system to respond more rapidly and effectively to pathogens that have been encountered previously, and reflects the preexistence of a clonally expanded population of antigen-specific lymphocytes. Memory responses, which are called secondary, tertiary, and so on, depending on the number of exposures to antigen, also differ qualitatively from primary responses. This is particularly clear in the case of the antibody response, where the characteristics of antibodies produced in secondary and subsequent responses are distinct from those produced in the primary response to the same antigen. Memory T-cell responses have been harder to study, but can also be distinguished from the responses of naive or effector T cells. The principal focus of this section will be the altered character of memory responses, although we will also discuss emerging explanations of how immunological memory persists after exposure to antigen. A long-standing debate about whether specific memory is maintained by distinct populations of long-lived memory cells that can persist without residual antigen, or by lymphocytes that are under perpetual stimulation by residual antigen, appears to have been settled in favor of the former hypothesis.

6 0

3 years ago

Stereoscopic vision, grasping hands and flat nails rather than claws seem to be good adaptations to living in trees. However, so

OLga [1]

Answer:

This is due to the general nature of the body's features.

Explanation:

The traits are important in the survival of the creatures. For example, a keen vision is needed to spot prey that is several meters or kilometers away. In addition, the claws serve different functions. For example, the claws are there to rest on the patch of the tree and hold firmly. In addition, the claws are for tearing prey. Further, the claws are for holding and lifting prey and suffocating it if necessary.

5 0

4 years ago